LOL! Yep....can't beat that ole' Tamsulosin! Anyway, I use to replace my water pump (impeller) every two years when I was running full out through the seasons. And that one you show there definitely NEEDS to be replaced. Don't take any chances. You will just not notice when it all of a sudden stops peeing. That will cost you a new engine!

I love the idea of the weed wacker string for clearing out the tube! Had to use a high pressure air hose on my little 8 hp this fall before firing it up. The wasps just totally blocked the tube.